btrfs-progs/tests/common.convert

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#!/bin/bash
# helpers for btrfs-convert tests
# mount image of converted filesystem of a given type
# $1: type of the filesystem
run_check_mount_convert_dev()
{
local fstype
local loop_opt
setup_root_helper
fstype="$1"
shift
if [ -z "$fstype" ]; then
_fail "Missing source filesystem type"
fi
if [ "$fstype" = 'btrfs' ]; then
_fail "Incorrect type for converted filesystem: btrfs"
fi
if [[ -b "$TEST_DEV" ]]; then
loop_opt=""
elif [[ -f "$TEST_DEV" ]]; then
loop_opt="-o loop"
else
_fail "Invalid \$TEST_DEV: $TEST_DEV"
fi
[[ -d "$TEST_MNT" ]] || {
_fail "Invalid \$TEST_MNT: $TEST_MNT"
}
run_check $SUDO_HELPER mount $loop_opt -t "$fstype" "$@" "$TEST_DEV" "$TEST_MNT"
}
populate_fs() {
for dataset_type in 'small' 'hardlink' 'fast_symlink' 'brokenlink' 'perm' 'sparse' 'acls' 'fifo' 'slow_symlink'; do
generate_dataset "$dataset_type"
done
}
# verbose message before the test, same arguments as convert_test
convert_test_preamble() {
local features
local msg
features="$1"
msg="$2"
shift 3
echo " [TEST/conv] $msg, btrfs" "${features:-defaults}"
echo "creating test image with: $@" >> "$RESULTS"
}
# prepare TEST_DEV before conversion, create filesystem and mount it, image
# size is 512MB
# $1: type of the filesystem
# $2+: free form, command to create the filesystem, with appended -F
convert_test_prep_fs() {
local fstype
local force
local mountopts
fstype="$1"
shift
# TEST_DEV not removed as the file might have special permissions, eg.
# when test image is on NFS and would not be writable for root
run_check truncate -s 0 "$TEST_DEV"
# 256MB is the smallest acceptable btrfs image.
run_check truncate -s 512M "$TEST_DEV"
force=
mountopts=
case "$fstype" in
ext[234])
force=-F ;;
reiserfs)
force=-ff
mountopts="-o acl,user_xattr,attrs" ;;
*)
_fail "unknown filesystem to convert: $fstype"
esac
run_check "$@" $force "$TEST_DEV"
# create a file to check btrfs-convert can convert regular file correct
run_check_mount_convert_dev "$fstype" $mountopts
# create a file inside the fs before convert, to make sure there is
# data covering btrfs backup superblock range (64M)
run_check $SUDO_HELPER dd if=/dev/zero bs=1M count=64 \
of="$TEST_MNT/convert_space_holder"
}
# generate md5 checksums of files on $TEST_MNT
# $1: path where the checksums will be stored
convert_test_gen_checksums() {
_assert_path "$1"
run_check $SUDO_HELPER dd if=/dev/zero of="$TEST_MNT/test" "bs=$nodesize" \
count=1 >/dev/null 2>&1
run_check_stdout $SUDO_HELPER find "$TEST_MNT" -type f ! -name 'image' -exec md5sum {} \+ > "$1"
}
# list $TEST_MNT data set file permissions.
# $1: path where the permissions will be stored
convert_test_perm() {
local PERMTMP
_assert_path "$1"
PERMTMP="$1"
FILES_LIST=$(mktemp --tmpdir btrfs-progs-convert.fileslistXXXXXX)
run_check $SUDO_HELPER dd if=/dev/zero of="$TEST_MNT/test" "bs=$nodesize" \
count=1 >/dev/null 2>&1
run_check_stdout $SUDO_HELPER find "$TEST_MNT" -type f ! -name 'image' -fprint "$FILES_LIST"
# Fix directory entries order
sort "$FILES_LIST" -o "$FILES_LIST"
for file in `cat "$FILES_LIST"` ;do
run_check_stdout $SUDO_HELPER getfacl --absolute-names "$file" >> "$PERMTMP"
done
rm -- "$FILES_LIST"
}
# list acls of files on $TEST_MNT
# $1: path where the acls will be stored
convert_test_acl() {
local ACLSTMP
ACLTMP="$1"
FILES_LIST=$(mktemp --tmpdir btrfs-progs-convert.fileslistXXXXXX)
run_check_stdout $SUDO_HELPER find "$TEST_MNT/acls" -type f -fprint "$FILES_LIST"
# Fix directory entries order
sort "$FILES_LIST" -o "$FILES_LIST"
for file in `cat "$FILES_LIST"`;do
run_check_stdout $SUDO_HELPER getfattr --absolute-names -d "$file" >> "$ACLTMP"
done
rm -- "$FILES_LIST"
}
# do conversion with given features and nodesize, fsck afterwards
# $1: features, argument of -O, can be empty
# $2: nodesize, argument of -N, can be empty
convert_test_do_convert() {
run_check "$TOP/btrfs-convert" ${1:+-O "$1"} ${2:+-N "$2"} "$TEST_DEV"
run_check "$TOP/btrfs" check "$TEST_DEV"
run_check "$TOP/btrfs" inspect-internal dump-super -Ffa "$TEST_DEV"
}
# post conversion check, verify file permissions.
# $1: file with ext permissions.
convert_test_post_check_permissions() {
local EXT_PERMTMP
local BTRFS_PERMTMP
_assert_path "$1"
EXT_PERMTMP="$1"
BTRFS_PERMTMP=$(mktemp --tmpdir btrfs-progs-convert.permXXXXXX)
convert_test_perm "$BTRFS_PERMTMP"
btrfs_perm=`md5sum "$BTRFS_PERMTMP" | cut -f1 -d' '`
ext_perm=`md5sum "$EXT_PERMTMP" | cut -f1 -d' '`
if [ "$btrfs_perm" != "$ext_perm" ];
then
btrfs_perm_file=`md5sum "$BTRFS_PERMTMP" | cut -f2 -d' '`
ext_perm_file=`md5sum "$EXT_PERMTMP" | cut -f2 -d' '`
_fail "file permission failed. Mismatched BTRFS:$btrfs_perm_file:$btrfs_perm EXT:$ext_perm_file:$ext_perm"
fi
rm -- "$BTRFS_PERMTMP"
}
# post conversion check, compare BTRFS file acls against EXT.
# $1: file with ext acls.
convert_test_post_check_acl() {
local EXT_ACLTMP
local BTRFS_ACLTMP
_assert_path "$1"
EXT_ACLTMP="$1"
BTRFS_ACLTMP=$(mktemp --tmpdir btrfs-progs-convert.aclsXXXXXXX)
convert_test_acl "$BTRFS_ACLTMP"
btrfs_acl=`md5sum "$BTRFS_ACLTMP" | cut -f1 -d' '`
ext_acl=`md5sum "$EXT_ACLTMP" | cut -f1 -d' '`
if [ "$btrfs_acl" != "$ext_acl" ]
then
btrfs_acl_file=`md5sum "$BTRFS_ACLTMP" | cut -f2 -d' '`
ext_acl_file=`md5sum "$EXT_ACLTMP" | cut -f2 -d' '`
_fail "file acl failed. Mismatched BTRFS:$btrfs_acl_file:$btrfs_acl EXT:$ext_acl_file:$ext_acl"
fi
rm -- "$BTRFS_ACLTMP"
}
# post conversion checks, verify md5sums
convert_test_post_check_checksums() {
_assert_path "$1"
run_check_stdout $SUDO_HELPER md5sum -c "$1" |
grep -q 'FAILED' && _fail "file validation failed"
}
# post conversion checks, all three in one call, on an unmounted image
# $1: file with checksums
# $2: file with permissions.
# $3: file with acl entries.
convert_test_post_checks_all() {
_assert_path "$1"
_assert_path "$2"
_assert_path "$3"
run_check_mount_test_dev
convert_test_post_check_checksums "$1"
convert_test_post_check_permissions "$2"
convert_test_post_check_acl "$3"
# Create a large file to trigger data chunk allocation
generate_dataset "large"
run_check_umount_test_dev
}
# do rollback and fsck
# $1: filesystem name or alias (ext2 includes ext3 and ext4),
convert_test_post_rollback() {
local types
run_check "$TOP/btrfs-convert" --rollback "$TEST_DEV"
if [ -z "$1" ]; then
_fail "missing filesystem type to check"
fi
case "$1" in
ext[234]) types=ext2,ext3,ext4 ;;
reiserfs) types=reiserfs ;;
*) _fail "unknown filesystem type to check: $1" ;;
esac
run_check fsck -n -t "$types" "$TEST_DEV"
}
# simple wrapper for a convert test
# $1: type of the converted filesystem
# $2: btrfs features, argument to -O
# $3: description of the test "ext2 8k nodesize"
# $4: nodesize value
# $5 + rest: command to create the ext2 image
convert_test() {
local fstype
local features
local nodesize
local msg
local CHECKSUMTMP
local EXT_PERMTMP
local EXT_ACLTMP
fstype="$1"
features="$2"
msg="$3"
nodesize="$4"
shift 4
convert_test_preamble "$features" "$msg" "$nodesize" "$@"
convert_test_prep_fs "$fstype" "$@"
populate_fs
CHECKSUMTMP=$(mktemp --tmpdir btrfs-progs-convert.XXXXXXXXXX)
EXT_PERMTMP=$(mktemp --tmpdir btrfs-progs-convert.permXXXXXX)
EXT_ACLTMP=$(mktemp --tmpdir btrfs-progs-convert.aclsXXXXXXX)
convert_test_gen_checksums "$CHECKSUMTMP"
convert_test_perm "$EXT_PERMTMP"
convert_test_acl "$EXT_ACLTMP"
run_check_umount_test_dev
convert_test_do_convert "$features" "$nodesize"
convert_test_post_checks_all "$CHECKSUMTMP" "$EXT_PERMTMP" "$EXT_ACLTMP"
rm -- "$CHECKSUMTMP"
rm -- "$EXT_PERMTMP"
rm -- "$EXT_ACLTMP"
convert_test_post_rollback "$fstype"
}
load_module_reiserfs()
{
$SUDO_HELPER modprobe reiserfs
}
check_kernel_support_reiserfs()
{
if ! grep -iq 'reiserfs' /proc/filesystems; then
echo "WARNING: reiserfs filesystem not listed in /proc/filesystems, some tests might be skipped"
return 1
fi
return 0
}